The charity was ordered by the Employment Appeal Tribunal in London to pay the amount after it defied a previous employment tribunal instruction to take back Judith Oliver and backdate her pay to November 2006, when she was dismissed.
It takes the total awarded to Oliver to more than £75,000: she received the maximum compensation for unfair dismissal of £60,600 (9 July, page 5). The tribunal had assessed her losses as more than £200,000.
The charity had used the appeal to try to reverse the ruling that Oliver should be reinstated.
Oliver said she was happy to be able to put more than two years of anxiety and pressure behind her.
A statement from the charity's trustees said they were disappointed but stood by their original decision.